Amphibole's Influence on Mid‐Lithosphere Discontinuity: Insights From Electrical Conductivity
Abstract The potential role of metasomatism‐induced hydrated layers, such as amphibole, in causing the mid‐lithospheric discontinuities (MLDs) has been widely debated. To determine whether amphibole is the compositional cause of the MLDs, we measured the electrical conductivity of mixtures of olivin...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-03-01
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| Series: | Geophysical Research Letters |
| Online Access: | https://doi.org/10.1029/2024GL113651 |
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| _version_ | 1849313631347408896 |
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| author | Kewei Shen Duojun Wang Rui Zhang Guangchao Chen Kenan Han Peng Chen Ruixin Zhang Zhiqing Zhang |
| author_facet | Kewei Shen Duojun Wang Rui Zhang Guangchao Chen Kenan Han Peng Chen Ruixin Zhang Zhiqing Zhang |
| author_sort | Kewei Shen |
| collection | DOAJ |
| description | Abstract The potential role of metasomatism‐induced hydrated layers, such as amphibole, in causing the mid‐lithospheric discontinuities (MLDs) has been widely debated. To determine whether amphibole is the compositional cause of the MLDs, we measured the electrical conductivity of mixtures of olivine and various proportions of amphiboles under high pressures and temperatures. Our results showed that the amphibole reacted with the olivine at >1,023–1,173 K. Comparison of the geophysical observations with the electrical structure profiles calculated from this study constrained the amphibole contents of 20%–29% in MLDs in North China and South Australia, which may induce a 2.2%–3.1% reduction in seismic velocity. |
| format | Article |
| id | doaj-art-3516fc2f699b465fb2c3b9fd86f86475 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-3516fc2f699b465fb2c3b9fd86f864752025-08-20T03:52:42ZengWileyGeophysical Research Letters0094-82761944-80072025-03-01525n/an/a10.1029/2024GL113651Amphibole's Influence on Mid‐Lithosphere Discontinuity: Insights From Electrical ConductivityKewei Shen0Duojun Wang1Rui Zhang2Guangchao Chen3Kenan Han4Peng Chen5Ruixin Zhang6Zhiqing Zhang7High Pressure Experiment Science Center College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing ChinaHigh Pressure Experiment Science Center College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing ChinaHigh Pressure Experiment Science Center College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing ChinaCollege of Materials Science and Optoelectronic Technology University of Chinese Academy of Sciences Beijing ChinaHigh Pressure Experiment Science Center College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing ChinaHigh Pressure Experiment Science Center College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing ChinaHigh Pressure Experiment Science Center College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing ChinaHigh Pressure Experiment Science Center College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing ChinaAbstract The potential role of metasomatism‐induced hydrated layers, such as amphibole, in causing the mid‐lithospheric discontinuities (MLDs) has been widely debated. To determine whether amphibole is the compositional cause of the MLDs, we measured the electrical conductivity of mixtures of olivine and various proportions of amphiboles under high pressures and temperatures. Our results showed that the amphibole reacted with the olivine at >1,023–1,173 K. Comparison of the geophysical observations with the electrical structure profiles calculated from this study constrained the amphibole contents of 20%–29% in MLDs in North China and South Australia, which may induce a 2.2%–3.1% reduction in seismic velocity.https://doi.org/10.1029/2024GL113651 |
| spellingShingle | Kewei Shen Duojun Wang Rui Zhang Guangchao Chen Kenan Han Peng Chen Ruixin Zhang Zhiqing Zhang Amphibole's Influence on Mid‐Lithosphere Discontinuity: Insights From Electrical Conductivity Geophysical Research Letters |
| title | Amphibole's Influence on Mid‐Lithosphere Discontinuity: Insights From Electrical Conductivity |
| title_full | Amphibole's Influence on Mid‐Lithosphere Discontinuity: Insights From Electrical Conductivity |
| title_fullStr | Amphibole's Influence on Mid‐Lithosphere Discontinuity: Insights From Electrical Conductivity |
| title_full_unstemmed | Amphibole's Influence on Mid‐Lithosphere Discontinuity: Insights From Electrical Conductivity |
| title_short | Amphibole's Influence on Mid‐Lithosphere Discontinuity: Insights From Electrical Conductivity |
| title_sort | amphibole s influence on mid lithosphere discontinuity insights from electrical conductivity |
| url | https://doi.org/10.1029/2024GL113651 |
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